I don't know of any reading assignments that would help; I strongly believe that the person needs to be deeply invested and interested for any such reading material to really sink in and stick.
So- on that note- what about tools? The Manners Minder I just bought came with a very nicely produced DVD with a full training plan about getting control of a crazy dog. It's a nicely structured plan with small, achievable steps broken down into segments that are built on top of each other.
RATCHX3 High Jinks vom Neuanfang - Gotchya Day: 1/23/2013 DN, SG, SR, CA
Inspire Spark to Ignition! (Ignite) Gotchya Day: 10/8/2016
C-ATCH Pimg - RATO, UJJ (x2), DJX, HIT, CA, CGC, High in Games, Reserve High in Standard- CPE Nationals 2014